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STOCK-BASED COMPENSATION - Deferred Share Units Activity (Details) - Deferred share units $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Number of Shares
Beginning balance at January 1, 2021 (in shares) | shares	748
Granted (in shares) | shares	89
Exercised/Released (in shares) | shares	(165)
Canceled/Forfeited (in shares) | shares	0
Reinvested (in shares) | shares	10
Ending balance at December 31, 2021 (in shares) | shares	682
Weighted Grant Date Fair Value Per Share
Beginning balance at January 1, 2021 (in dollars per share) | $ / shares	$ 21.76
Granted (in dollars per share) | $ / shares	15.75
Exercised/Released (in dollars per share) | $ / shares	9.07
Canceled/Forfeited (in dollars per share) | $ / shares	0
Reinvested (in dollars per share) | $ / shares	14.51
Ending balance at December 31, 2021 (in dollars per share) | $ / shares	$ 23.95
Outstanding, aggregate intrinsic value | $	$ 12,072

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